<template>
  <div class="reports">
    <!-- 面包屑区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片区域 -->
    <el-card>
      <!-- 为ECharts准备一个具备大小（宽高）的Dom -->
      <div id="main" style="width: 800px; height:500px;"></div>
    </el-card>
  </div>
</template>

<script>
import * as echarts from 'echarts'
import { getReportPic } from 'network/report'

export default {
  name: "Reports",
  data() {
    return {
      // 折线图数据
      option: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  // 此时页面上的元素已经渲染完毕了
  mounted() {
    // 基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(document.getElementById('main'));
    // 使用刚指定的配置项和数据显示图表。
    getReportPic().then(res => {
      if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.option = Object.assign(this.option, res.data)
      myChart.setOption(this.option);
      console.log(res);
    }).catch(() => this.$message.error('获取数据失败'))
    
  },
  methods: {
    
  }
}
</script>

<style>
  .el-breadcrumb {
    margin-bottom: 20px;
  }
</style>